Update dependency symfony/process to v8 (#51)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -28,7 +28,7 @@
         "phpunit/phpunit": "^11.0",
         "rector/rector": "^2",
         "squizlabs/php_codesniffer": "^3",
-        "symfony/process": "^6 || ^7.0",
+        "symfony/process": "^6 || ^7.0 || ^8.0",
         "drupal/coder": "^8.3",
         "drevops/phpcs-standard": "^0.6"
     },